What is 19.7 percent of 40000000000 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 40000000000 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 40000000000 is 100%, so we can write it down as 40000000000=100%.
4. We know, that x is 19.7% of the output value, so we can write it down as x=19.7%.
5. Now we have two simple equations:
1) 40000000000=100%
2) x=19.7%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
40000000000/x=100%/19.7%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 19.7% of 40000000000

40000000000/x=100/19.7
(40000000000/x)*x=(100/19.7)*x       - we multiply both sides of the equation by x
40000000000=5.0761421319797*x       - we divide both sides of the equation by (5.0761421319797) to get x
40000000000/5.0761421319797=x
7880000000=x
x=7880000000

now we have:
19.7% of 40000000000=7880000000